EQUIPMENT FOR CHARGING ACCUMULATOR BATTERIES

• US 3,586,954 A
• Filed: 11/08/1968
• Issued: 06/22/1971
• Est. Priority Date: 11/09/1967
• Status: Expired due to Term

• Current Assignee: Carves Henri
• Original Assignee: Carves Henri
• Inventors: CARVES HENRI
• Application Number:
  US04/774,278
• Time in Patent Office: 956 Days
• US Class Current: 320/137
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 7/00719 in response to degree of gas development in the battery
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: Y10S 320/24 Inductor

Abstract

A winding of an electric traction motor of an electric powered vehicle is employed as a smoothing choke in the charging circuit for an accumulator battery which normally supplies the power to the traction motor during vehicle operation.

Claims

1. In a system comprising an electric motor having at least one winding, said motor powered by an accumulator battery which is recharged by a rectified alternating current, the improvement comprising:

means for connecting a winding of said electric motor between said source and said accumulator battery whereby, during the recharging of the battery, said winding acts as a choke coil to smooth the charging current of the accumulator battery.

2. The system as claimed in claim 1 wherein said motor comprises the traction motor for a mobile craft, and said winding comprises the field winding of said traction motor.

3. In a battery-powered electric motor drive system wherein said battery is an accumulator battery, the improvement comprising:

a recharging circuit comprising a source of rectified alternating current for recharging said accumulator battery, and control and regulating means for placing a coil means of said electric motor in series with said accumulator battery for smoothing the charging current to said accumulator battery.